class_docstr: Handle to a named resource in a ResourceReader.
code: def is_file(self):
      return True
  
imports: import abc
  import io
  import itertools
  from typing import BinaryIO, List
  from .abc import Traversable, TraversableResources
label_desc: Use image node_id 2 for calling the ResourceHandle obj's underlying member method code with example usage: obj.is_file() and returns: True